Related Experiment Video
Updated: Jul 22, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Understanding Correlation between Magnetism and Electrocatalytic Hydrogen Evolution Based on Intrinsic Properties of
Zehui Sun1, Shiming Zhao1, Zhihao Gu1
1Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
Abstract:
Few-layered molybdenum chalcogenide (MoS2) has attracted considerable attention due to its defect-rich structure and active edge sites, triggering distinctive electrocatalysis and magnetism properties. Quantifying the intrinsic properties of a single entity is of paramount importance for clarifying the structure-activity correlation. Here, the intrinsic activities of single MoS2 flakes toward the hydrogen evolution reaction (HER) were investigated by single nanoparticle collision electrochemical measurements with and without a moderate magnetic field. Our results demonstrate that single bilayer MoS2 flakes show the highest HER performance and the greatest magnetic enhancement among bilayer-, trilayer-, and multilayer-MoS2 flakes. This is because bilayer MoS2 flakes possess abundantly exposed edge sites and sulfur vacancies, which simultaneously accelerate the reaction kinetics of HER and increase the ferromagnetism properties. This work gives new insight into providing specific guidance for the magnetic modulation of few-layered MoS2 and the design of highly effective MoS2-based electrocatalysts.
More Related Videos
10:59Author Spotlight: Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
Published on: May 12, 2023
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Related Concept Videos
Ferromagnetism
Magnetic Susceptibility and Permeability
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
Paramagnetism
Electrochemistry: Overview
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
Magnetic Moment of an Electron